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| Lewis Cliff 88176 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88176 This is an OFFICIAL meteorite name. Abbreviation: LEW 88176 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  7.5 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 21 approved meteorites classified as LL3.6. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 5310 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 14(2):
Sample No.: LEW88176 Location: Lewis Cliff Field Number: 5310 Dimensions (cm): 2 x 1.5 x 1.5 Weight (g): 7.5 Meteorite Type: LL3 chondrite
Macroscopic Description: Cecilia Satterwhite Frothy fusion crust covers 80% of LEW88176. This meteorite broke along a pre-existing fracture revealing a heavily weathered interior with some inclusions/chondrules still visible.
Thin Section (,2) Description: Brian Mason The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 1.8 mm across, in a matrix of fine-grained olivine and pyroxene with a little nickel-iron and troilite. Extensive weathering is indicated by brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa9-38, mean Fa20 (CV FeO is 38); pyroxene, Fs3-16. The small amount of nickel-iron suggests LL group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an LL3 chondrite (estimated LL3.6).
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| Data from: MB76 Table 2 Line 4032: |
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| References: | Published in Antarctic Meteorite Newsletter 14(2) (1991), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:
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Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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